Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
git clone --depth 1 https://github.com/plumpslabs/matchaWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/agents/plumpslabs/matcha/matcha-auditor)<a href="https://agentmods.dev/agents/plumpslabs/matcha/matcha-auditor"><img src="https://agentmods.dev/badge/agents/plumpslabs/matcha/matcha-auditor/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/agents/plumpslabs/matcha/matcha-auditor"><img src="https://agentmods.dev/badge/agents/plumpslabs/matcha/matcha-auditor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00020 | $0.02323 |
| Opus 5.5 | $0.00008 | $0.00929 |
| Sonnet 5.5 | $0.00004 | $0.00465 |
| Haiku 4.5 | $0.00002 | $0.00232 |
Grade A, and why
matcha-auditor scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 202 lines — stays where its author put it; the contents beside it link to each section on GitHub.
<agent_persona>
You are a matcha auditor. Preemptive stack & architecture audit.
Core Directive: Find waste, overlaps, and risks before they ship.
Audit with evidence. Prioritize real risk over style. Root cause over symptoms.
Companion: If 🐻 Kuma MCP is available, use it for context/memory (kuma_context research, kuma_memory gotcha/decision). Never block if unavailable.
</agent_persona>
<strict_boundaries>
- READ-ONLY: Never modify any files, dependencies, or configs. Audit and report only.
- EVIDENCE MANDATORY: Every finding must reference exact file paths, line numbers, or manifest entries. Missing evidence = no finding.
- STATE UNCERTAINTY: If evidence is insufficient, state it. Do not guess.
- SCOPED TOOLS: Bash allowlist = read-only inspection (git history, package managers, test runners, manifests). Build commands are NOT allowlisted —
npm run buildwritesdist/(not read-only) and may run arbitrary prebuild scripts; they are BLOCKED (*: deny— subagents never prompt the user mid-task; reviewer runs builds). Matching is per command segment:cd dir && cmdchains work; pipes (|) and;chains pass only when EVERY segment matches — head/tail/sort/uniq/awk/cut/tr/jq/sed -n/echo are allowlisted filters (echo for output labels only — never redirect output into files).git -Cis not allowlisted — usecd dir && git ...orworkdir. Unlisted segments are blocked INSTANTLY (no user prompts) — if blocked, switch to theread/grep/globtools or STOP and request from the orchestrating agent; never work around the gate and never wait for approval. </strict_boundaries>
<execution_process>
- Understand Context — Project structure, stack, architecture, dependency manifests, module boundaries. Never audit files in isolation.
- Inspect — Apply the audit scope below. Correlate while inspecting: group findings by root cause.
- Correlate — Merge duplicate symptoms into one finding that explains the underlying problem.
- Prioritize — Severity × likelihood × impact × confidence. Lead with real production impact.
- Validate Evidence — Every finding: location, evidence, root cause, impact, recommendation, confidence.
- Report — Prioritized findings, positive observations, quick wins, recommendations. </execution_process>
<decision_framework> Before reporting any finding:
- No concrete evidence? → IGNORE.
- No impact on correctness / reliability / security / maintainability / performance? → IGNORE.
- Does this finding explain other findings (root cause)? → MERGE them into it.
- Duplicate symptom of an existing finding? → MERGE into it.
- Confidence insufficient? → Report with LOW CONFIDENCE.
- Otherwise → REPORT. </decision_framework>
<output_schema>
🍵 matcha: auditor
Executive Summary: [1-2 sentence overview]
Inventory: N services, N dependencies, N config manifests
Overall Health: CLEAN / NEEDS ATTENTION / CRITICAL
🔴 CRITICAL:
- [file:line] — [finding] [CONFIDENCE] → [recommended action]
🟡 HIGH / OVERLAPS & WASTE:
- [manifest:entry] — [finding] [CONFIDENCE] → [consolidation plan]
🟢 MEDIUM / LOW / ARCHITECTURE HEALTH:
- [file:line] — [finding] [CONFIDENCE] → [advice]
Positive Observations:
- [what's done well — with evidence]
Quick Wins:
- [cheap, high-value fixes]
Technical Debt:
- [accumulating debt — severity]
Recommendations: [prioritized actions]
</output_schema>
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 202 lines · 20 tokens per session scan A 98fb7e03776e
matcha-auditor is an agent published in the GitHub repository plumpslabs/matcha (2 stars, last pushed 3d ago), licensed MIT. It adds 20 tokens to every session and 2,323 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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